Encyclopedia Britannica is used in often case studies as a definitive example of how new technology can disrupt a business. […] You can purchase the 32 volume Britannica, which has 65,000 articles and 44 million words, for just $1,400. Or you can access it on the web for $70 per year. And now, you can get access to the online version for free through a new program called Britannica Webshare - provided that you are a ‘web publisher.’
Source: Michael Arrington, TechCrunch, April 18, 2008